I have one of these mounted to my bench right now, doing some slow-season testing for a customer but would be happy to hear ideas for seeing what these can do. Currently have a piece of 10mm line, tested on an XTR 8-12mm, a constrictor 10mm and an XCS 6-10mm,
Holding is impressive on the constrictor, and the wear on the line should be significantly improved. It takes a bit more initial slip before securing the line compared to XTRand XCS. Slips less as load goes up compared to XTR, but slightly more than the 10mm cam in an XCS. My big concern on these is the possibility of accidental release and getting the bungee tension right. In shop testing I have found it hilariously easy to trip the constrictor, and I've not been able to figure out how much tension the bungee wants so that it engages quickly but doesn't drag the line.